Question

Remember the #47 light you used in the Prelab1? Well, the
brightness is correct,
but it reaches its full output much too quickly; your eyes are
sensitive at 2:00 a.m., aren’t
they? Add a capacitor across the light bulb to smooth things out.
Select its value such
that it reaches 63% of its total brightness in five seconds, and
use the original circuit you
designed in Prelab1. What should the voltage rating of this
capacitor be and why?
Remember, the #47 bulb drops 6.3 V @ 150 mA. Hint: make sure you
take into account
the equivalent resistance seen by the bulb when computing the time
constant. Draw the
entire circuit